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[SACDRV]: Last WIP pass at VTUTF8ChannelConsumeEscapeSequence. Document the last few commands, and comment the entire parser so that it makes sense (within MS's definition of making sense). The erase/clear commands need cleanup/implementation, will take a pass at those later.
svn path=/trunk/; revision=59827
This commit is contained in:
Alex Ionescu
parent
02ed8a9b93
commit
93883d01d6
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@ -235,8 +235,10 @@ typedef enum _SAC_ANSI_COMMANDS
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SacEraseScreen,
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SacSetCursorPosition,
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SacSetScrollRegion,
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SacSetBackgroundColor = 21,
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SacSetFontColor
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SacSetColors,
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SacSetBackgroundColor,
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SacSetFontColor,
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SacSetColorsAndAttributes
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} SAC_ANSI_COMMANDS;
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//
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@ -1325,3 +1327,154 @@ ChannelHasNewIBufferData(IN PSAC_CHANNEL Channel)
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/* Return if there's any new data in the input buffer */
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return Channel->ChannelHasNewIBufferData;
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}
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//
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// FIXME: ANSI.H
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//
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//
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// Source: http://en.wikipedia.org/wiki/ANSI_escape_code
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//
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typedef enum _VT_ANSI_ATTRIBUTES
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{
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//
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// Attribute modifiers (mostly supported)
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//
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Normal,
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Bold,
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Faint,
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Italic,
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Underline,
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SlowBlink,
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FastBlink,
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Inverse,
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Conceal,
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Strikethrough,
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//
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// Font selectors (not supported)
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//
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PrimaryFont,
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AlternateFont1,
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AlternateFont2,
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AlternateFont3,
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Alternatefont4,
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AlteronateFont5,
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AlteronateFont6,
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AlternateFont7,
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AlternatEfont8,
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Alternatefont9,
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//
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// Additional attributes (not supported)
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//
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Fraktur,
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DoubleUnderline,
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//
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// Attribute Un-modifiers (mostly supported)
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//
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BoldOff,
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ItalicOff,
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UnderlineOff,
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BlinkOff,
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Reserved,
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InverseOff,
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ConcealOff,
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StrikethroughOff,
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//
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// Standard Text Color
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//
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SetColorStart,
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SetColorBlack = SetColorStart,
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SetColorRed,
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SetColorGreen,
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SetColorYellow,
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SetColorBlue,
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SetcolorMAgent,
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SetColorCyan,
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SetColorWhite,
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SetColorMax = SetColorWhite,
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//
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// Extended Text Color (not supported)
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//
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SetColor256,
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SeTextColorDefault,
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//
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// Standard Background Color
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//
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SetBackColorStart,
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SetBackColorBlack = SetBackColorStart,
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SetBackColorRed,
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SetBackColorGreen,
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SetBackColorYellow,
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SetBackColorBlue,
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SetBackcolorMAgent,
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SetBackColorCyan,
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SetBackColorWhite,
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SetBackColorMax = SetBackColorWhite,
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//
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// Extended Background Color (not supported)
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//
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SetBackColor256,
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SetBackColorDefault,
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//
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// Extra Attributes (not supported)
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//
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Reserved1,
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Framed,
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Encircled,
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Overlined,
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FramedOff,
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OverlinedOff,
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Reserved2,
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Reserved3,
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Reserved4,
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Reserved5
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//
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// Ideograms (not supported)
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//
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} VT_ANSI_ATTRIBUTES;
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//
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// The following site is a good reference on VT100/ANSI escape codes
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// http://www.termsys.demon.co.uk/vtansi.htm
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//
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#define VT_ANSI_ESCAPE L'\x1B'
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#define VT_ANSI_COMMAND L'['
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#define VT_ANSI_CURSOR_UP_CHAR L'A'
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#define VT_ANSI_CURSOR_UP L"[A"
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#define VT_ANSI_CURSOR_DOWN_CHAR L'B'
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#define VT_ANSI_CURSOR_DOWN L"[B"
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#define VT_ANSI_CURSOR_RIGHT_CHAR L'C'
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#define VT_ANSI_CURSOR_RIGHT L"[C"
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#define VT_ANSI_CURSOR_LEFT_CHAR L'D'
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#define VT_ANSI_CURSOR_LEFT L"[D"
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#define VT_ANSI_ERASE_LINE_CHAR L'K'
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#define VT_ANSI_ERASE_END_LINE L"[K"
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#define VT_ANSI_ERASE_START_LINE L"[1K"
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#define VT_ANSI_ERASE_ENTIRE_LINE L"[2K"
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#define VT_ANSI_ERASE_SCREEN_CHAR L'J'
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#define VT_ANSI_ERASE_DOWN_SCREEN L"[J"
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#define VT_ANSI_ERASE_UP_SCREEN L"[1J"
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#define VT_ANSI_ERASE_ENTIRE_SCREEN L"[2J"
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#define VT_ANSI_BACKTAB_CHAR L'Z'
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#define VT_220_BACKTAB L"[0Z"
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#define VT_ANSI_SET_ATTRIBUTE_CHAR L'm'
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#define VT_ANSI_SEPARATOR_CHAR L';'
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#define VT_ANSI_HVP_CURSOR_CHAR L'f'
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#define VT_ANSI_CUP_CURSOR_CHAR L'H'
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#define VT_ANSI_SCROLL_CHAR L'r'
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@ -15,156 +15,6 @@
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CHAR IncomingUtf8ConversionBuffer[4];
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WCHAR IncomingUnicodeValue;
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/* FUNCTIONS *****************************************************************/
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//
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// Source: http://en.wikipedia.org/wiki/ANSI_escape_code
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//
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typedef enum _VT_ANSI_ATTRIBUTES
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{
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//
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// Attribute modifiers (mostly supported)
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//
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Normal,
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Bold,
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Faint,
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Italic,
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Underline,
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SlowBlink,
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FastBlink,
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Inverse,
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Conceal,
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Strikethrough,
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//
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// Font selectors (not supported)
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//
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PrimaryFont,
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AlternateFont1,
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AlternateFont2,
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AlternateFont3,
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Alternatefont4,
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AlteronateFont5,
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AlteronateFont6,
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AlternateFont7,
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AlternatEfont8,
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Alternatefont9,
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//
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// Additional attributes (not supported)
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//
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Fraktur,
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DoubleUnderline,
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//
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// Attribute Un-modifiers (mostly supported)
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//
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BoldOff,
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ItalicOff,
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UnderlineOff,
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BlinkOff,
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Reserved,
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InverseOff,
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ConcealOff,
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StrikethroughOff,
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//
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// Standard Text Color
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//
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SetColorStart,
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SetColorBlack = SetColorStart,
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SetColorRed,
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SetColorGreen,
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SetColorYellow,
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SetColorBlue,
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SetcolorMAgent,
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SetColorCyan,
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SetColorWhite,
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SetColorMax = SetColorWhite,
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//
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// Extended Text Color (not supported)
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//
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SetColor256,
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SeTextColorDefault,
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//
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// Standard Background Color
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//
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SetBackColorStart,
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SetBackColorBlack = SetBackColorStart,
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SetBackColorRed,
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SetBackColorGreen,
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SetBackColorYellow,
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SetBackColorBlue,
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SetBackcolorMAgent,
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SetBackColorCyan,
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SetBackColorWhite,
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SetBackColorMax = SetBackColorWhite,
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//
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// Extended Background Color (not supported)
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//
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SetBackColor256,
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SetBackColorDefault,
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//
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// Extra Attributes (not supported)
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//
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Reserved1,
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Framed,
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Encircled,
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Overlined,
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FramedOff,
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OverlinedOff,
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Reserved2,
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Reserved3,
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Reserved4,
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Reserved5
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//
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// Ideograms (not supported)
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//
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} VT_ANSI_ATTRIBUTES;
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//
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// The following site is a good reference on VT100/ANSI escape codes
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// http://www.termsys.demon.co.uk/vtansi.htm
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//
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#define VT_ANSI_ESCAPE L'\x1B'
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#define VT_ANSI_COMMAND L'['
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#define VT_ANSI_CURSOR_UP_CHAR L'A'
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#define VT_ANSI_CURSOR_UP L"[A"
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#define VT_ANSI_CURSOR_DOWN_CHAR L'B'
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#define VT_ANSI_CURSOR_DOWN L"[B"
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#define VT_ANSI_CURSOR_RIGHT_CHAR L'C'
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#define VT_ANSI_CURSOR_RIGHT L"[C"
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#define VT_ANSI_CURSOR_LEFT_CHAR L'D'
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#define VT_ANSI_CURSOR_LEFT L"[D"
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#define VT_ANSI_ERASE_LINE_CHAR L'K'
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#define VT_ANSI_ERASE_END_LINE L"[K"
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#define VT_ANSI_ERASE_START_LINE L"[1K"
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#define VT_ANSI_ERASE_ENTIRE_LINE L"[2K"
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#define VT_ANSI_ERASE_SCREEN_CHAR L'J'
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#define VT_ANSI_ERASE_DOWN_SCREEN L"[J"
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#define VT_ANSI_ERASE_UP_SCREEN L"[1J"
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#define VT_ANSI_ERASE_ENTIRE_SCREEN L"[2J"
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#define VT_ANSI_BACKTAB_CHAR L'Z'
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#define VT_220_BACKTAB L"[0Z"
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#define VT_ANSI_SET_ATTRIBUTE_CHAR L'm'
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#define VT_ANSI_SEPARATOR_CHAR L';'
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#define VT_ANSI_HVP_CURSOR_CHAR L'f'
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#define VT_ANSI_CUP_CURSOR_CHAR L'H'
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#define VT_ANSI_SCROLL_CHAR L'r'
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SAC_STATIC_ESCAPE_STRING SacStaticEscapeStrings [] =
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{
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{ VT_ANSI_CURSOR_UP, 2, SacCursorUp },
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@ -180,6 +30,16 @@ SAC_STATIC_ESCAPE_STRING SacStaticEscapeStrings [] =
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{ VT_ANSI_ERASE_ENTIRE_SCREEN, 3, SacEraseScreen },
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};
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/* FUNCTIONS *****************************************************************/
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FORCEINLINE
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VOID
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VTUTF8ChannelAssertCursor(IN PSAC_CHANNEL Channel)
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{
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ASSERT(Channel->CursorRow < SAC_VTUTF8_ROW_HEIGHT);
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ASSERT(Channel->CursorCol < SAC_VTUTF8_COL_WIDTH);
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}
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BOOLEAN
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NTAPI
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VTUTF8ChannelScanForNumber(IN PWCHAR String,
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@ -225,16 +85,14 @@ VTUTF8ChannelProcessAttributes(
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return STATUS_NOT_IMPLEMENTED;
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}
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FORCEINLINE
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VOID
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VTUTF8ChannelAssertCursor(IN PSAC_CHANNEL Channel)
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{
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ASSERT(Channel->CursorRow < SAC_VTUTF8_ROW_HEIGHT);
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ASSERT(Channel->CursorCol < SAC_VTUTF8_COL_WIDTH);
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}
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//
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// Not a
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// This function is the guts of the sequences that SAC supports.
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//
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// It is written to conform to the way that Microsoft's SAC driver interprets
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// the ANSI standard. If you want to extend and/or "fix" it, please use a flag
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// that can be set in the Registry to enable "extended" ANSI support or etc...
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//
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// Hermes, I'm looking at you, buddy.
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//
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ULONG
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NTAPI
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@ -246,12 +104,18 @@ VTUTF8ChannelConsumeEscapeSequence(IN PSAC_CHANNEL Channel,
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PSAC_CURSOR_DATA Cursor;
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ASSERT(String[0] == VT_ANSI_ESCAPE);
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/* Microsoft's driver does this after the O(n) check below. Be smarter. */
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if (String[1] != VT_ANSI_COMMAND) return 0;
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/* Now that we know it's a valid command, look through the common cases */
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for (i = 0; i < RTL_NUMBER_OF(SacStaticEscapeStrings); i++)
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{
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/* Check if an optimized sequence was detected */
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if (!wcsncmp(String + 1,
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SacStaticEscapeStrings[i].Sequence,
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SacStaticEscapeStrings[i].Size))
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{
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/* Yep, return the right action, length, and set optionals to 1 */
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Action = SacStaticEscapeStrings[i].Action;
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Result = SacStaticEscapeStrings[i].Size + 1;
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Number = Number2 = Number3 = 1;
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@ -259,10 +123,11 @@ VTUTF8ChannelConsumeEscapeSequence(IN PSAC_CHANNEL Channel,
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}
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}
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if (String[1] != VT_ANSI_COMMAND) return 0;
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/* It's a more complex sequence, start parsing it */
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Result = 0;
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Sequence = String + 2;
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/* First, check for the cursor sequences. This is useless due to above. */
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switch (*Sequence)
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{
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case VT_ANSI_CURSOR_UP_CHAR:
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@ -289,113 +154,154 @@ VTUTF8ChannelConsumeEscapeSequence(IN PSAC_CHANNEL Channel,
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break;
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}
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/* This must be a sequence starting with ESC[# */
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if (!VTUTF8ChannelScanForNumber(Sequence, &Number)) return 0;
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while ((*Sequence >= L'0') && (*Sequence <= L'9')) Sequence++;
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/* Check if this is ESC[#m */
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if (*Sequence == VT_ANSI_SET_ATTRIBUTE_CHAR)
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{
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/* Some attribute is being set, go over the ones we support */
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switch (Number)
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{
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/* Make the font standard */
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case Normal:
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Action = SacFontNormal;
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break;
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/* Make the font bold */
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case Bold:
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Action = SacFontBold;
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break;
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/* Make the font blink */
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case SlowBlink:
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Action = SacFontBlink;
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break;
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/* Make the font colors inverted */
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case Inverse:
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Action = SacFontInverse;
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break;
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/* Make the font standard intensity */
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case BoldOff:
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Action = SacFontBoldOff;
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break;
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/* Turn off blinking */
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case BlinkOff:
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Action = SacFontBlinkOff;
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break;
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/* Turn off inverted colors */
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case InverseOff:
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Action = SacFontInverseOff;
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break;
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/* Something else... */
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default:
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/* Is a background color being set? */
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if ((Number < SetBackColorStart) || (Number > SetBackColorMax))
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{
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/* Nope... is it the foreground color? */
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if ((Number < SetColorStart) || (Number > SetColorMax))
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{
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/* Nope. SAC expects no other attributes so bail out */
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ASSERT(FALSE);
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return 0;
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}
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/* Yep -- the number will tell us which */
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Action = SacSetFontColor;
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}
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else
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{
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/* Yep -- the number will tell us which */
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Action = SacSetBackgroundColor;
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}
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break;
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}
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/* In all cases, we're done here */
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goto ProcessString;
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}
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/* The only allowed possibility now is ESC[#;# */
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if (*Sequence != VT_ANSI_SEPARATOR_CHAR) return 0;
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Sequence++;
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if (!VTUTF8ChannelScanForNumber(Sequence, &Number2)) return 0;
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while ((*Sequence >= L'0') && (*Sequence <= L'9')) Sequence++;
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if (*Sequence == VT_ANSI_SET_ATTRIBUTE_CHAR)
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/* There's two valid forms accepted at this point: ESC[#;#m and ESC[#;#H */
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switch (*Sequence)
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{
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Action = 20;
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goto ProcessString;
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/* This is ESC[#;#m -- used to set both colors at once */
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case VT_ANSI_SET_ATTRIBUTE_CHAR:
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Action = SacSetColors;
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goto ProcessString;
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/* This is ESC[#;#H -- used to set the cursor position */
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case VT_ANSI_CUP_CURSOR_CHAR:
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Action = SacSetCursorPosition;
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goto ProcessString;
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/* Finally, this *could* be ESC[#;#; -- we'll keep parsing */
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case VT_ANSI_SEPARATOR_CHAR:
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Sequence++;
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break;
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/* Abandon anything else */
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default:
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return 0;
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}
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if (*Sequence == VT_ANSI_CUP_CURSOR_CHAR)
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/* The SAC seems to accept a few more possibilities if a ';' follows... */
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switch (*Sequence)
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{
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Action = SacSetCursorPosition;
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goto ProcessString;
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}
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if (*Sequence != VT_ANSI_SEPARATOR_CHAR) return 0;
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Sequence++;
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|
||||
if ((*Sequence == VT_ANSI_CUP_CURSOR_CHAR) ||
|
||||
(*Sequence == VT_ANSI_HVP_CURSOR_CHAR))
|
||||
{
|
||||
Action = SacSetCursorPosition;
|
||||
goto ProcessString;
|
||||
}
|
||||
|
||||
if (*Sequence == VT_ANSI_SCROLL_CHAR)
|
||||
{
|
||||
Action = SacSetScrollRegion;
|
||||
goto ProcessString;
|
||||
/* Both ESC[#;#;H and ESC[#;#;f are really the same command */
|
||||
case VT_ANSI_CUP_CURSOR_CHAR:
|
||||
case VT_ANSI_HVP_CURSOR_CHAR:
|
||||
/* It's unclear why MS doesn't allow the HVP sequence on its own */
|
||||
Action = SacSetCursorPosition;
|
||||
goto ProcessString;
|
||||
|
||||
/* And this is the ESC[#;#;r command to set the scroll region... */
|
||||
case VT_ANSI_SCROLL_CHAR:
|
||||
/* Again, not clear why ESC[#;#r isn't supported */
|
||||
Action = SacSetScrollRegion;
|
||||
goto ProcessString;
|
||||
|
||||
/* Anything else must be ESC[#;#;# */
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
/* Get the last "#" */
|
||||
if (!VTUTF8ChannelScanForNumber(Sequence, &Number3)) return 0;
|
||||
while ((*Sequence >= L'0') && (*Sequence <= L'9')) Sequence++;
|
||||
|
||||
/* And now the only remaining possibility is ESC[#;#;#;m */
|
||||
if (*Sequence == VT_ANSI_SET_ATTRIBUTE_CHAR)
|
||||
{
|
||||
Action = 23;
|
||||
/* Which sets both color and attributes in one command */
|
||||
Action = SacSetColorsAndAttributes;
|
||||
goto ProcessString;
|
||||
}
|
||||
|
||||
/* No other sequences supported */
|
||||
return 0;
|
||||
|
||||
ProcessString:
|
||||
/* Unless we got here from the optimized path, calculate the length */
|
||||
if (!Result) Result = Sequence - String + 1;
|
||||
|
||||
/* Get the current cell buffer */
|
||||
Cursor = (PSAC_CURSOR_DATA)Channel->OBuffer;
|
||||
VTUTF8ChannelAssertCursor(Channel);
|
||||
|
||||
/* Handle all the supported SAC ANSI commands */
|
||||
switch (Action)
|
||||
{
|
||||
case SacCursorUp:
|
||||
|
|
@ -519,21 +425,26 @@ ProcessString:
|
|||
break;
|
||||
|
||||
case SacEraseEndOfScreen:
|
||||
ASSERT(FALSE); // todo
|
||||
break;
|
||||
|
||||
case SacEraseStartOfScreen:
|
||||
ASSERT(FALSE); // todo
|
||||
break;
|
||||
|
||||
case SacEraseScreen:
|
||||
ASSERT(FALSE); // todo
|
||||
break;
|
||||
|
||||
case SacSetCursorPosition:
|
||||
ASSERT(FALSE); // todo
|
||||
break;
|
||||
|
||||
case SacSetScrollRegion:
|
||||
ASSERT(FALSE); // todo
|
||||
break;
|
||||
|
||||
case 20:
|
||||
case SacSetColors:
|
||||
Channel->CursorColor = Number;
|
||||
Channel->CursorBackColor = Number2;
|
||||
break;
|
||||
|
|
@ -546,7 +457,7 @@ ProcessString:
|
|||
Channel->CursorColor = Number;
|
||||
break;
|
||||
|
||||
case 23:
|
||||
case SacSetColorsAndAttributes:
|
||||
Channel->CursorFlags = Number;
|
||||
Channel->CursorColor = Number2;
|
||||
Channel->CursorBackColor = Number3;
|
||||
|
|
@ -555,6 +466,7 @@ ProcessString:
|
|||
break;
|
||||
}
|
||||
|
||||
/* Return the length of the sequence */
|
||||
return Result;
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue